2.USB device wake-up (3-pin USBPWR12, USBPWR34, USBPWR56, USBPWR78)

Set these jumpers to +5V to wake up the computer from S1 sleep mode (CPU stopped, DRAM refreshed, system running in low power mode) using the connected USB devices. Set to +5VSB to wake up from S3 and S4 sleep modes (no power to CPU, DRAM in slow refresh, power supply in reduced power mode).

K8U-X

K8U-X USB device wake up

USBPW34

USBPW12

 

3

2

2

1

 

+5V

+5VSB

(Default)

 

USBPW78

USBPW56

1

2

2

3

+5V

+5VSB

(Default)

1.The USB device wake-up feature requires a power supply that can provide 500mA on the +5VSB lead for each USB port. Otherwise, the system would not power up.

2.The total current consumed must NOT exceed the power supply capability (+5VSB) whether under normal condition or in sleep mode.

ASUS K8U-X Motherboard

1-17